Polymeric reaction products of biphenols and organosilicon materials and method for making

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EP 0 398 049 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	19.06.1991 Bulletin 1991/25

(43)	Date of publication A2:
	22.11.1990 Bulletin 1990/47

(21)	Application number: 90107893.1

(22)	Date of filing: 25.04.1990

(51)	International Patent Classification (IPC)⁵: C08G 77/60, C08G 77/52

(84)	Designated Contracting States:
	DE ES FR GB IT NL

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Priority:

18.05.1989 US 353713
21.03.1990 US 497155

(71)	Applicant: GENERAL ELECTRIC COMPANY
	Schenectady New York 12305 (US)

(72)	Inventors:
	Webb, Jimmy Lynn Ballston Lake, New York 12019 (US) Nye, Susan Adams Feura Bush, New York 12067 (US) Grade, Marsha Mottel Schenectady, New York 12309 (US)

(74)	Representative: Pratt, Richard Wilson et al
	London Patent Operation G.E. Technical Services Co. Inc. Essex House 12/13 Essex Street London WC2R 3AA London WC2R 3AA (GB)

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References cited: :

(54)	Polymeric reaction products of biphenols and organosilicon materials and method for making

(57) Poly(silyloxytetraalkylbiphenyleneoxide)s are provided resulting from the reaction between a tetraalkylbiphenol, such as tetramethylbiphenol and an organosilicon material such as dimethyldichlorosilane or octamethylcyclotetrasilazane. The poly(silyloxytetraalkylbiphenyleneoxide)s are flame retardant film-forming materials useful as high performance injection moldable thermoplastics and dielectrics.

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